Means for forming plow-irons



NO. 752,104. PATENTED FEB. 16, 1904. M. M. RENN.

MEANS FOR FORMING PLOW IRONS. APPLICATION FILED HA3. 9. 1903.

N0 MODEL.

fIEn-l TEE-i TIE-.5 T1222.

1 UNITED STATES- Patented February 16, 1904,

PATENT FFICEY.

. MEANS FOR FORMING PLOW-IRONS.

SPECIFICATION forming part of Letters Patent N 0. 752,104, datedFebruary 16, 1904:.

Application filed March 9, 1903.

('0 all whom it may concern;

Be it known that I, MATTHEW M. RENN, a :itizen of the United States,residing at Louis- 'ille, in the county of Jefferson and State ofKentucky, have invented certain new and use- 111 Improvements in Meansfor Forming Plow- Irons; and I do declare the following to be a "ull,clear, and exact description of the invenion, such as will enable othersskilled in the brt to which it appertains to make and use theame.

My invention relates to improvements in neans for shaping plow-irons,such as plow- )oints, moldboards, or other parts of plows in vhich saidparts are provided with lateralffs et portions, such as landsides, whenthe :aid parts are plow-points; and it consists in ,he peculiarconstruction and combination of levices hereinafter described andclaimed.

The object of my invention is to provide iovel and improved appliancesby means of vhich a plow-iron having a lateral offset may )e formed andthe ofiset also formed at a :ingle operation Without the necessity offirst Forming the plow-iron and subsequently formng the offset portionand welding the same illGISlSO.

In the accompanying drawings, Figure 1 is partly an elevation and partlya section of lies, a die-block, and a hammer-die constitutng improvedmeans for making plow-irons in Lccordance with my invention, thehammerlie being shown in an elevated position and he blank from whichthe plow-iron is forged )r shaped being shown as in its originalconlition prior to the action of the hammer-die hereon. iammer-die inthe act of delivering its blow )11 the upper side of the blank to shapethe atter in the mold-cavity of the dies and to also simultaneously formthe offset of the glow-iron. Fig. 3 is a detail perspective view )f theblank prior to the placing thereof in ;he dies. Fig. 4 is a similar viewof a plowpoint having a laterahofliset constituting a .andside, theplow-point having been formed trom such blank, as is shown in Fig. 3.

In the embodiment of my invention here ahown the block 1 is provided inits upper Fig. 2 is a similar view showing the Serial No. 146,986- (Nomodel.)

side with an angular recess 2, adapted for the reception of the dies 3t, in the opposing sides of which is formed the mold-cavity 5,corresponding'to the required shape of the body or major portion of theplow-point or other plowiron at to be formed therein. The die 3 is hereshown as provided with a shoulder 6, which is disposed laterally withreference to the moldcavity, and the dies 3 4: are shown as respectivelyprovided with vertical extensions 7 8, which project above the saidshoulder 6 and are adapted to guide and form a seat for the lowerportion 9 of the hammer-die 10, which hammer-die, as will be understood,is adapted to coact with the dies 3 4 in the making of the plow-iron.Any suitable means may, within the scope of my invention, be employed tosecure the dies 3 4E in the seat of the die-block 1, and any suitablemeans may be employed for raising and lowering the dies, for placing theblanks between the dies, and removing the plow-points therefrom whenfinished. The

hammer-die may be operated by any suitable mechanism, such assteam-hammer mechanism or bulldozer.

It will be observed by reference to Figs. 1, 2 of the drawings that themold-cavity formed in the opposing sides of the dies 3 4c is disposedobliquely with reference to the plane of movement of the hammer-die,this disposition of the mold-cavity facilitating the action of thehammer-die in driving the heated ductile stock of that portion of theblank which is to constitute the body of the iron into the moldcavity,so as to forge and shape the same therein.

In the manufacture of a plow-iron or similar article by my improvedappliance ablank Z2 is first provided, which approximates the shape ofthe finished article and exceeds the same in one of its dimensions, sothat when the blank is placed in the mold-cavity between the blocks 3 4,as shown in Fig. 1, a portion of the blank will extend upwardly from andout of the said mold-cavity inthe space formed between the opposingsides of the guiding and shaping extensions 7 8 of saiddiesi It will beunderstood that prior to the introduction of the blank into themold-cavity the blank will be heated to the requisite degree. In orderto forge and shape the plow-iron or other article, the hammer-die 9 isdriven with force toward the dies 3 4, caused to enter the space betweenthe guiding and shaping extensions 7 8, and to deliver its blow on theprojecting portion of the blank to force the same into and shape thebody portion of the iron or other article in the mold-cavity of the dies3 4 and immediately thereafter to also upset the projecting portion ofthe blank and cause the same to be forged and shaped between thehammer-die 9, shoulder 6, and extensions 7 8,

' as shown at Fig. 2, so that the entire plowiron, including both thebody thereof and its lateral extension, (indicated in the presentinstance as the landside 0Z,) are formed simultaneously and integrally,thus rendering it unnecessary to first manufacture the body of theplow-iron and then separately manufacture the offset portion thereof andsubsequently weld the same thereto as is now the usual practice.

It will be observed by reference to Figs. 1 and 2 of the drawings thatthe die 3 is movable vertically, so that the width of the space betweenthe opposing sides of the dies 3 4: may be varied, being widened whenthe die 3 is raised and narrowed or contracted when said die is drivendownwardly. The blank is placed in the mold-cavity between the opposingsides of the dies 3 4 when the die 3 is in the elevated position shownin Fig. 1, and when the hammer-die delivers its blow it serves to drivethe body of the blank downwardly into the obliquely-disposed mold-cavitybetween the opposing sides of the dies 3 4L to drive the die 3downwardly, thereby compressing the body portion of the blank between itand the die 4 to forge, shape, and finish the body portion of the work,and the hammer-die, which enters the space between the extensions 7 8 ofthe dies, fits the said space, which constitutes an open mold-cavity,closes the open side of the said cavity, and serves to forge, form, and

shape the offset portion of the work therein, as hereinbefore described.

By my improved means I greatly simplify and reduce the cost of themanufacture of that class of plow-irons and similar articles whichconstitute the body portion and have a'lateral portion projectingtherefrom.

For the purposes of this specification I have shown and described aplow-point as the subject of manufacture, the same having a lateraloffset d, constituting a landside. I will have it understood, however,that other plow-irons may be manufactured by my improved appliances byproviding dies of suitable shape, and I do not limit myself in thisparticular. Neither do I desire otherwise to limit myself to the preciseconstruction and combination of devices hereinbefore described, as it isevident that modifications may be made therein without departing fromthe spirit of my invention and within the scope of the appended claim.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is- Y The combination of adie-block, shapingdies therein, one of said dies being stationary andthe other vertically movable in relation thereto, said shaping-dieshaving a mold-cavity in their opposing sides, and a mold-cavity, open onone side, communicating therewith; and a hammer-die coacting with theshapingdies to forge and shape the body of the work in the firstmentioned cavity thereof, and shaped to enter, fit and close the opencavity and to downwardly move the movable die to forge and shape anoffset or lateral portion of the work therein, substantially asdescribed.

In testimony whereof Ihave hereunto set my hand in presence of twosubscribing witnesses.

MATTHEW M. RENN.

Witnesses:

J. W. BRYAN, GEO. GUTIG.

